Watching IPTV on Nvidia Shield and Firestick 4K in the house. For some unknown reason the IPTV at times buffer/stutters on the Nvidia Shield, even after factory reset numerous times. If I replace it with Firestick 4K then the same IPTV is very smooth with no buffering/stuttering. Strange behavior for a device that I thought was top of the picks. Nvidia Shield has the latest update.